Add test shell scripts

Assignment9/src/main.c

@@ -32,7 +32,7 @@ int main(int argc, char *argv[]) {
 		bool is_idat = memcmp(chunks[i]->type, "IDAT", 4) == 0;
 		bool is_iend = memcmp(chunks[i]->type, "IEND", 4) == 0;
 		if (is_idat || is_iend) {
-			printf("Found %.4s chunk\n", chunks[i]->type);
+			printf("Found %.4s\n", chunks[i]->type);
 			if (is_idat) {
 				xor_data(chunks[i]);
 			}

Assignment9/tests/test_images.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Executable path
+EXECUTABLE=../build/Assignment9
+
+
+test_reverse() {
+    start=$(date +%s)
+    cp "$1" in.png
+    cp in.png out.png
+    $EXECUTABLE out.png > /dev/null
+    $EXECUTABLE out.png > /dev/null
+    diff in.png out.png
+    rm in.png out.png
+    end=$(date +%s)
+    echo "Test $1 took $((end - start)) seconds"
+}
+
+test_reverse test1.png
+# test_reverse test2.png # This png is invalid, so it will fail
+test_reverse test3.png
+test_reverse test4.png

Assignment9/tests/test_text.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+EXECUTABLE=../build/Assignment9
+
+# Test the text output
+$EXECUTABLE test1.png | diff output1.txt -
+$EXECUTABLE test2.png | diff output2.txt -
+$EXECUTABLE test3.png | diff output3.txt -
+$EXECUTABLE test4.png | diff output4.txt -
+
+
+# Reverse the images
+$EXECUTABLE test1.png > /dev/null
+$EXECUTABLE test2.png > /dev/null
+$EXECUTABLE test3.png > /dev/null
+$EXECUTABLE test4.png > /dev/null
+
+echo "If there is no diff output, then the test passed."